you read it right: SACDs don't work with DACs and you'll need 2 inputs if you want to use a DAC (you can buy a box that will add inputs to solve that one).
others will no doubt disagree, but SACDs just aren't the huge dramatic improvement that they were supposed to be. regular CDs, it turns out, are quite capable of sounding very good, assuming they're recorded/mastered well.
if you really want to listen to a lot of SACDs and have the upgrade bug, you might want to look at getting a SACD player that is known for excellent CD playback - there are quite a few out there and some can be had used for the price of a good DAC (about $1K).